CCCUK logo

 Adrian Flux

Website Control

Recent threads

New Forum Posts

» A rather fast C2 vette by Vetteheadtony on Sat 21 Jul 18 21:37

» Damn Yankees Summer Slam - North Weald by Vetteheadtony on Sat 21 Jul 18 21:32

» Vulcan Tour 2018 by 666Vette on Sat 21 Jul 18 18:54

» Black '68 by MIT on Sat 21 Jul 18 17:26

» Is this 'The begining of the end' OR 'The end of the begining' ? by Daytona Vette on Sat 21 Jul 18 17:07

» Spare wheel kit 74 by MIT on Sat 21 Jul 18 13:44

» Silverstone Classic - 20/21/22 July 2018 by jukebox on Sat 21 Jul 18 12:56

» New member in Retford, Notts.......! by elv19.pn@outlook.com on Sat 21 Jul 18 09:11

» 1978 C3 Corvette Silver Anniversary L82 Automatic by geoff917 on Fri 20 Jul 18 17:08

» International Corvette & Camaro Meeting 2019 - 20th Anniversary by Alexa-Italy on Fri 20 Jul 18 16:31

» Valkenberg - A Beschi family tribute by JonnyC4 on Thu 19 Jul 18 20:48

» C5 Z06 centre caps? by yenko 1969 on Thu 19 Jul 18 11:11

» 15x8 OEM Rally wheels by Ddave on Thu 19 Jul 18 08:44

» Looking for a C6 Z06 by IbanezDan51 on Wed 18 Jul 18 23:56

» BBCN Regional Meet by Nicetie on Wed 18 Jul 18 22:58

» Buying a C6 Convertible.... Or more likely a Targa Top by chevrolet on Tue 17 Jul 18 22:18

» For Sale - C4 '84-'86 E (Early) Solid Roof by chevrolet on Tue 17 Jul 18 20:30

» Corvette-Fame 13-14-15 July 2018 by JonnyC4 on Tue 17 Jul 18 18:06

» Developing Starter Issue by kentvette on Mon 16 Jul 18 18:41

» Shooting for 1000whp with my C7 @ Top Cats Racing by roppa440 on Mon 16 Jul 18 15:07

» What did you do with your Vette today? by roppa440 on Mon 16 Jul 18 09:39

» Garage services required for a C3 in the NW by Daytona Vette on Sun 15 Jul 18 20:06

» NEC Classic Car Show - Birmingham by 86vetteman on Sat 14 Jul 18 22:39

» C4 coupe wanted by Redridge Corvette on Sat 14 Jul 18 21:54

»  by Nosheruk on Sat 14 Jul 18 17:44

» How to post a photo in the forums by Nosheruk on Sat 14 Jul 18 17:38

» New member, new c3 on order! by Forrest Gump on Sat 14 Jul 18 12:06

» C5 seat refurbishment by roscobbc on Sat 14 Jul 18 09:29

» Classic + Vintage Vehicle Festival - Peterborough by curious bystander on Fri 13 Jul 18 17:35

» R/H door lock mech and clip by MIT on Fri 13 Jul 18 16:53

Lowering my c4



Reply to topic
View previous topicEmail to a FriendPrinter FriendlyView next topic

Author

Message

stuart2379

Regular

Thu 16 Nov 17 08:59

Lowering my c4


Morning

Love my 1989 l98 corvette. What is the best way to lower the suspension? Is it worth doing? Any recommendations of where to go? It's not something I can or want to do myself. Any help appreciated. Also any ideas for upgrading the wheels? Worth it and where to go? Like to keep my options open.

Stuart



Last edited by stuart2379 on Thu 16 Nov 17 09:05; edited 1 time in total. [18 %]

Reply with quote

Redlevel

Club Member

Thu 16 Nov 17 10:45

Re: Lowering my c4


I wouldn't be lowering it as its low enough already, but you can improve the cornering by simple adjustments to the front geometry..

Read this for a better explanation. I did mine in about 30mins (still had to get it re-tracked though) and added about 1.5deg of -ve camber and more +ve caster. I can corner faster as it feels more planted, but this is now showing up the crap tyres I use on the rear and occasional drifting on the commute can be unexpected! Surprised

http://www.superchevy.com/how-to/vemp-0012-wheel-alignment-c...

There are a lot of wheels around so it depends on what will fit and what you like, but just make sure the tyres are available. I run 16x10 BBS's all round with super rare 295/50x16's on the back. If these tyres dry up I'll switch down to 15" wheels as I do not like the spokey "gun carriage" wheels that are so common these days, but its a personal choice what you like.

Image



Last edited by Redlevel on Thu 16 Nov 17 10:49; edited 1 time in total. [14 %]

Reply with quote

chevrolet

Club Member

Thu 16 Nov 17 13:32

Re: Lowering my c4


stuart2379 wrote (View Post):Morning

Love my 1989 l98 corvette. What is the best way to lower the suspension? Is it worth doing? Any recommendations of where to go? It's not something I can or want to do myself. Any help appreciated. Also any ideas for upgrading the wheels? Worth it and where to go? Like to keep my options open.

Stuart


Guess it depends on what you are trying to achieve? Looks, ride, handling changes? If you have a car with the Z51 (sports) suspension option, it rides pretty firm as it is, No?

Obviously, putting on bigger diameter wheels, and potentially skinnier sidewall depth tyres, is going to affect the ride quality (and handling and "rattles") (?)

Look on the Ecklers and Mid America (and others) websites for C4 lowering kits. Its bolts for the back and wedges for the front, if I remember correctly. Keith at Eurovettes will be able to get them for you:

http://www.eurovettes.com/

Don't know if there is anyone in the club on here, who has a lowered/big wheel C4? But must admit, think this one in Picture 1, looks pretty cool?

http://www.corvetteclub.org.uk/viewtopic.php?t=18761

Must admit, first thing I would be spending my money on, is a CCCUK subscription, if only for the insurance discounts and excellent club magazine etc etc.



Last edited by chevrolet on Thu 16 Nov 17 14:21; edited 2 times in total. [21 %]
--------------------
AKA "Silver C6" on Pistonheads

Reply with quote

FelixP

Addict

Thu 16 Nov 17 15:33

Re: Lowering my c4


I bought the wedge & bolt kit and paid my mechanic to lower it for me. I'll write up a more in-depth post later. My wishbones now have black polybushes too, look stock. No squeaks or rattles and a much crisper turn in. It's not slammed but it doesn't have that goofy wheel arch gap either.

Image

Image


--------------------
1989 Corvette C4 L98 6 speed ZF with Z51 & FX3

Reply with quote

Redlevel

Club Member

Thu 16 Nov 17 17:10

Re: Lowering my c4


I find this odd..

Why would GM have the C4 with a +ve camber from stock? Confused

The C4 factory specifications call for a slight outward tilt, or positive camber, while the C5s use a very slight negative camber, with the top of the wheel tilted inwards.

..anyway, its an easy adjustment to turn it -ve, but you'll only get about 1-1.5deg. If you do this, remember to measure the shims you remove from each side of the wishbone and bag and label them. You'll find they aren't equal on each side, so remember to factor that in when removing them to allow the top wishbone to move inboard.

A long 18mm socket and a decent open box 18mm spanner is all you need.

I worked it out to increase +ve caster too as you can't have enough of that stuff..

Image

Reply with quote

stuart2379

Regular

Thu 16 Nov 17 20:06

Re: Lowering my c4


FelixP wrote (View Post):I bought the wedge & bolt kit and paid my mechanic to lower it for me. I'll write up a more in-depth post later. My wishbones now have black polybushes too, look stock. No squeaks or rattles and a much crisper turn in. It's not slammed but it doesn't have that goofy wheel arch gap either.

Image

Image


Your car looks excellent. That is exactly the look Iím after. Itís more for looks than anything else. I have always felt a car with nice wheels and ath the correct height can look really good.

Stuart

Reply with quote

Reply to topic
View previous topicEmail to a FriendPrinter FriendlyPrivate MessengerView next topic


Permissions

You cannot post new threads in this forum
You cannot reply to threads in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot add events in this forum
You cannot attach files in this forum
You cannot download files in this forum